As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING TRANSIT CHECK, THE RIGHT ENGINE FIRE HANDLE LIGHT WAS NOT ILLUMINATED DURING FIRE DETECTION TEST AND LOOP B OF RIGHT ENGINE WITH FAULT. MAINTENANCE PERSONNEL PERFORMED RIGHT ENGINE FIRE DETECTION TEST IAW AMM 26-10-00, DETECTING LINE OPEN AT MW0326 WIRE AT TERMINAL B2 IAW FIM 26-10 TASK 810 PROCEDURE; SO THE LOOP B OF RIGHT ENGINE WAS DEFERRED IAW MEL 26-2-2 CAT C. THE ELECTRIC HARNESS OF LOOP B OF RIGHT ENGINE WAS REPLACED IAW AMM 26-11-02, TESTED CORRECT.